Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.20.2
Document and Entity Information - shares
6 Months Ended
Jun. 30, 2020
Aug. 12, 2020
Document And Entity Information [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Entity Registrant Name Limbach Holdings, Inc.  
Entity Central Index Key 0001606163  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   7,884,202
Entity Emerging Growth Company false  
Entity Small Business true  
Entity Shell Company false